Adjustable casing-spear.



D. G. MONSEES.

ADJUSTABLE GASING SPEAR.

APPLICATION FILED MAY 24, 1911.

1,045,728. Patented 11011.26, 191.2.Y

2 SHEETS-SHEET l.

D. G. MONSEES.

ADJUSTABLE CASING SPBAR.

APPLICATION FILED MAY 24, 1911.

1,045,728. Patented Nov. 26, 1912.

2 SHEETS- SHEET Z.

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DIETRICH Gr. MONSEES, OF SEDALIA, MISSOURI.

ADJUSTABLE CASINGr-SPEAR.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed May 24, 1911. Serial No. 629,170.

To all whom it may concern:

Be it known that I, DIETRICH G. MoNsEns, a citizen of the United States,residing at Sedalia, in the county of Pettis and State of Missouri, haveinvented new and useful Improvements in Adjustable Casing-Spears, ofwhich the following is a specification.

This invention relates to improvements in casing spears, the object ofthe same being to provide a simple and edective means for recoveringpipes or casings from drilled wells.

IVith the above object in view, and others which will appear as thenature of the description progresses, the invention resides in the novelconstruction and arrangement of parts hereinafter fully described andclaimed.

In the drawings accompanying this speciication, there has beenillustrated a simple and approved construction of my invention, it beingunderstood, however, that the showing therein is lnerely illustrative,and that minor details of construction, as to size, shape, proportion,material, etc., within the scope of the appended claims, may be made, ifdesired.

In the drawings-Figure 1 is a side elevation of a casing spearconstructed in accordance with the present invention. Fig. 2 is avertical longitudinal sectional view of the same. Fig. 3 is a detailview of the stub and core. Fig. 4 is a similar view of the tube. Fig. 5is a perspective view of one of the guides. Fig. 6 is a similarview ofone of the travelers. Fig. 7 is a similar view of one of the jaws whichis secured to one of the travelers. Fig. 8 is a horizontal sectionalview upon the line 8 8 of Fig. 1.

Like numerals of reference designate corresponding parts throughout.

The numeral 1 designates the stub or rectangular portion of my device.This stub is integrally formed at the upper portion thereof with athreaded, preferably coneshaped head 2 whereby the said stub may beconnected with the regular drilling tools, if desired, and therectangular formation of the stub permits of the employment of a wrench,whereby the said stub may be rotated to permit of its head 2 engagingwith the threaded end of the drilling tool, and for another purposewhich will presently be set forth. The stub 1 has its lower face formedwith a threaded extension 3, and integrally connected with the saidlower face of the stub and projecting a suitable distance therefrom iswhat I term a core 4. This core or extension is threaded as at 5, thesaid threaded portion adapted to receive an adjusting nut 6, thefunction of which will also hereinafter be set forth. The threaded eX-tension 3, as well as the lower portion of the stub 1 is formed with aplurality of openings 7 as shown in the figures of the drawing, and thethreaded portion 3 of the said stub is adapted to coact with interiorthreads 8 provided upon a tube or casing 9. This casing 9 preferably hasits lower face coneshaned as designated by the numeral 10, and the saidcasing or tube is provided with a plurality of vertically arrangedopenings 11, the same being preferably four in number, but it is to beunderstood that the casing may be provided with any ynumber of saidopenings. Secured within the casing adjacent the openings 11 are theremovable guide members 12. Each of these guide members has its oppositevsides provided with tracks 13, and the said tracks are inclined fromthe' top of each of the guides toward the bottom thereof.' l

The numerals 14 designate the traveling members of the improvement.These travelers each have their opposite sides grooved as at 15, wherebythe said travelers may be slidably positioned upon the tracks of theadjacent guide members 12. The travelers 14 each have their upper endspreferably provided with an eye 16, and each of the said eyes is adaptedto receive a flexible element such as a wire 17, which passes through anopening 7, and whereby the said guides may be moved upwardly upon thetracks so as to bring the engaging faces of jaws 18, which are connectedwith the travelers, out of contact with the pipe section which is to beremoved by the support. The jaw members preferably have their outerfaces beveled or inclined, the said faces being further provided withteeth 19, and the jaw members are formed with openings which are adaptedto aline with similar openings in the travelers 14 and which are adaptedto receive securing elements such as screws 20. The jaws, it is to beunderstood, are arranged within the openings 11 of the tube or casing 9,and positioned upon the nut 6 and surrounding` the core 4 of the stub isa washer 21. This washer 21 is formed with off-sets or fingers 22, thelatter also extend ing through the openings 11 of the tube 9,

and it will be noted that by regulating the nut 6 in relation to thecore 4, the said washer will be moved either upwardly or downwardly asrdesired, and as -a consequence the throw or projection of the jaws 18will be also regulated, so that the said support can be adjusted forvarious sizes of pipes or tubings.

Having thus fully described the said invention, what I claim is 1. Acasing spear including a stud provided with a depending core, a casingsurrounding the core and attached to the stud, said casing being formedwith a plurality of openings, jaws adapted to travel within the saidopenings, and an adjustable washer secured to the core and forming asupport for the jaws and adapted to limit the movement of the jaws inone direction.

2. A casing spear comprising a stub formed with a core, a casingsurrounding the core and attached to the stub, said casing being formedwith a plurality of openings, jaws adapted to travel within the saidopenings, means for retracting the jaws within thev casing, and meansfor regulating the downward movement of the jaws in relation to thecasing.

3. A casing spear including a stub having a threaded head, the said stubhaving its lower portion also threaded, the stub having its said lowerportion provided with a plurality of openings, a core integrally formedupon the stub, an adjustable member upon the core, a casing having athreaded portion engaging with the lower threaded portion of the stub,inclined tracks within the casing, the said casing being formed withopenings adjacent the tracks, travelers mounted upon the tracks,removable jaws connected with the travelers, the said travelers and jawsadapted to normally rest upon the adjustable member, and flexibleelements connected with the travelers and passing through the openingsof the stub.

4. A casing spear comprising a stub having a core and a casing connectedwith the said stub, and surrounding the core, the said casing beingformed with a plurality of openings, an adjustable element upon thecore, said adjustable elementI comprising a washer having lingersarranged within the openings, the inner face of the casing beingprovided with removable guide members each having its opposite sidesJformed with a track, each of the said tracks being arranged at aninclination from the top to the bottom of the guides, travelers havingslotted sides engaging with the tracks of the guides, removable jawseach having their outer faces inclined and 'formed with teeth connectedwith the travelers, and the said travelers and jaws adapted to rest uponthe lingers of the washer.

In testimony whereof I aiiiX my signature in presence of two witnesses.

DIETRICH G. MONSEES. Witnesses:

E. E. May, G. H. BALDWIN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. YC.

